Laser Beam Welding of Brass

被引：11

作者：

Hugger, Florian ^{[1
]}

Hofmann, Konstantin ^{[1
]}

Stein, Stefan ^{[1
]}

Schmidt, Michael ^{[1
,2
,3
]}

机构：

[1] Bayer Laserzentrum GmbH blz, Konrad Zuse Str 2-6, D-91052 Erlangen, Germany

[2] Friedrich Alexander Univ Erlangen Nurnberg, Inst Photon Technol LPT, Konrad Zuse Str 3-5, D-91052 Erlangen, Germany

[3] Friedrich Alexander Univ Erlangen Nurnberg, Erlangen Grad Sch Adv Opt Technol SHOT, Paul Gordan Str 6, D-91052 Erlangen, Germany

来源：

8TH INTERNATIONAL CONFERENCE ON LASER ASSISTED NET SHAPE ENGINEERING (LANE 2014) | 2014年 / 56卷

基金：

美国国家科学基金会;

关键词：

Laser beam welding; copper; zinc; brass; evaporation pressure;

D O I：

10.1016/j.phpro.2014.08.045

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Up to date the evaporation process in laser beam welding of alloys with volatile elements is not completely understood. This paper discusses the phenomena occurring at the welding process of brass with 37m% zinc. Since copper has a solidification temperature of 1,087 degrees C and zinc vaporizes at a temperature of 907 degrees C, a strong evaporation takes place and an elongation of the keyhole can be observed. Depending upon welding velocity, the ratio of keyhole length to width is between one and six. Furthermore it is observed that a defect free weld seam is formed. Since the melt pool does not leak also for high ratios of keyhole length to width, the conventional keyhole model with a dynamic flow around the laser beam has to be adapted to a model in which the melt flow at the side of the capillary is stabilized also outside of the interaction zone of the laser beam with the melt due to strong evaporation at the flank of the keyhole. (C) 2014 Published by Elsevier B.V.

引用

页码：576 / 581

页数：6

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